Cannondale Synapse Neo SE Electric Bike

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With the power, range and comfort to open the roads for everyone, the Cannondale Synapse Neo SE is your ticket to endurance, efficiency, comfort and hill-leveling adventure.

  • Features

    • Bosch Active Line Plus drive system and long-range battery deliver quiet, light and drag-free performance with a range up to 93 miles (150km)
    • A classic endurance position, road-smoothing 650B x 47mm tires and bump-insulating SAVE micro-suspension keep you comfortably in control on even the longest, roughest days
    • Endurance Race Geometry positions you forward enough to go hard but upright enough to go long
    • Geared for adventure with a 1x11 SRAM Apex drivetrain that offers great chain-retention and elegant simplicity—perfect for bumpy back roads
    • A removable seatstay bridge and hidden fender mounts keep you grinding on any road, in any weather
    • An integrated wheel sensor delivers accurate speed, route and distance info, registers your bike, reminds you of needed service and more—all through the free Cannondale App
    • Pedals not included
    • Specs and images are subject to change


    This e-bike comes with Coast to Coast Support, which includes:
    • 1 year of free adjustments (see more below)
    • In-store bike assembly
    • Pickup in store or curbside
    • Bike experts available at 170+ bike shops
    REI Co-op Members get more:
    • An additional year of free adjustments (2 total years; see below)
    • Free flat tire repairs (labor only; parts not included)
    • 20% off shop services
    More about our free adjustments:
    New bikes go through a normal break-in period, after which they should be readjusted. All electric bicycles sold at REI include free adjustments for the defined period (one year after purchase date for non-members, or two years for REI Co-op Members)—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation, chain lubrication and e-bike firmware updates. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.

    View the Cannondale Synapse Product LineView all Cannondale Electric Road Bikes
  • Technical Specs

    Best Use

    Road Cycling

    E-Bike Classification

    Class 1: pedal assist up to 20 mph


    Bosch Active Line Plus 250W with Cannondale ACR software

    Motor Type


    Motor Torque (Nm)

    50 Newton meters

    Battery Type

    Lithium Ion

    Battery Capacity (Wh)

    500 watt hours

    Battery Removable


    Charge Time (hrs)

    4.5 hours

    Pedal Assist Range

    93 miles


    SmartForm C1 Alloy with internal cable routing, flat mount brake, 142x12 thru-axle



    Bike Suspension

    No Suspension


    Bosch Gen3 with custom Ai offset & FSA rings, 44T


    SRAM Apex hydro disc, 11-speed

    Rear Derailleur

    SRAM Apex 1, Long cage

    Rear Cogs

    SRAM PG-1130, 11-42, 11-speed

    Number of Gears

    11 gear(s)

    Brake Type

    Hydraulic Disc Brake


    SRAM Apex hydro disc, 160/160mm Centerline rotors

    Brake Levers

    SRAM Apex hydro disc


    WTB STi23 TCS 2.0, 28h, tubeless ready

    Front Hub

    Formula RX-512 12x100

    Rear Hub

    Formula DC-142 12x142

    Wheel Size



    WTB Byway TCS, 650b x 47mm, tubeless ready

    Tire Width

    47 millimeters

    Handlebar Shape

    Drop Bar


    Cannondale 3, 6061 alloy, Compact


    Cannondale 3, 6061 alloy, 7-degree

    Seat Post

    Cannondale 3, 6061 Alloy, 25.4, 350mm (S-M), 400mm (L-XL)


    Fabric Scoop Radius Sport, steel rails


    Not Included


    Integrated, 1-1/8 to 1.5 in., sealed angular contact bearings


    SRAM PC-1110, 11-speed


    40 lbs. 9.6 oz.

    Bike Weight

    Bike weight is based on median size, as sold, or the average of two median sizes.



  • Size Chart

    Effective Top Tube53.555.257.659.7
    Seat Tube Center-Top44.549.053.558.0
    Standover Height73778185
    Head Tube Length12.615.719.122.2
    Head Tube Angle (degrees)71°71°71°71°
    Seat Tube Angle (degrees)74°74°73.5°73°
    Bottom Bracket Height28.
    Fork Offset5.

    Sizing Notes

    Measurements are stated in centimeters unless otherwise indicated.

    How we measure bikes

    1. Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
    2. Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
    3. Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
    4. Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
    5. Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
    6. Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
    7. Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
    8. Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
    9. Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
    10. Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
    11. Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
    12. Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
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